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Skunk2 Ultra valve springs and spring base kit for Honda K20C1/K20C4 provide a matched valvetrain upgrade intended for higher-rev or performance-oriented builds. The kit combines uprated springs with compatible spring bases to support stronger valve control under increased lift or rev limits. Use with appropriate valvetrain components and tuning to ensure reliable operation in modified K-series engines.
Skunk2 Honda K20C1/K20C4 Ultra Valve Springs and Spring Base Kit
